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In multi-task Bayesian optimization, the goal is to leverage experience from optimizing existing tasks to improve the efficiency of optimizing new ones. While approaches using multi-task Gaussian processes or deep kernel transfer exist, the…

LLMs confront inherent limitations in terms of its knowledge, memory, and action. The retrieval augmentation stands as a vital mechanism to address these limitations, which brings in useful information from external sources to augment the…

信息检索 · 计算机科学 2026-01-06 Peitian Zhang , Shitao Xiao , Zheng Liu , Zhicheng Dou , Jian-Yun Nie

Unseen data conditions can inflict serious performance degradation on systems relying on supervised machine learning algorithms. Because data can often be unseen, and because traditional machine learning algorithms are trained in a…

机器学习 · 计算机科学 2017-09-01 Vikramjit Mitra , Horacio Franco

Instruction fine-tuning of large language models (LLMs) often involves selecting a subset of instruction training data from a large candidate pool, using a small query set from the target task. Despite growing interest, the literature on…

机器学习 · 计算机科学 2026-02-17 Nihal V. Nayak , Paula Rodriguez-Diaz , Neha Hulkund , Sara Beery , David Alvarez-Melis

Determining the optimal data mixture for large language model training remains a challenging problem with an outsized impact on performance. In practice, language model developers continue to rely on heuristic exploration since no…

Instruction tuning significantly enhances the performance of large language models (LLMs) across various tasks. However, the procedure to optimizing the mixing of instruction datasets for LLM fine-tuning is still poorly understood. This…

计算与语言 · 计算机科学 2024-02-20 Renxi Wang , Haonan Li , Minghao Wu , Yuxia Wang , Xudong Han , Chiyu Zhang , Timothy Baldwin

Large language models (LLMs) have demonstrated outstanding performance in natural language processing tasks. However, in the field of recommender systems, due to the inherent structural discrepancy between user behavior data and natural…

信息检索 · 计算机科学 2026-01-01 Zekun Liu , Xiaowen Huang , Jitao Sang

Large Language Models (LLMs) can acquire unintended biases from seemingly benign training data even without explicit cues or malicious content. Existing methods struggle to detect such risks before fine-tuning, making post hoc evaluation…

机器学习 · 计算机科学 2026-02-05 Mengru Wang , Zhenqian Xu , Junfeng Fang , Yunzhi Yao , Shumin Deng , Huajun Chen , Ningyu Zhang

The ability of Large Language Models (LLMs) to extract context from natural language problem descriptions naturally raises questions about their suitability in autonomous decision-making settings. This paper studies the behaviour of these…

人工智能 · 计算机科学 2025-07-22 Xiao Yang , Juxi Leitner , Michael Burke

The data used to pretrain large language models has a decisive impact on a model's downstream performance, which has led to a large body of work on data selection methods that aim to automatically determine the most suitable data to use for…

计算与语言 · 计算机科学 2023-12-12 Alon Albalak , Liangming Pan , Colin Raffel , William Yang Wang

Careful curation of data sources can significantly improve the performance of LLM pre-training, but predominant approaches rely heavily on intuition or costly trial-and-error, making them difficult to generalize across different data…

机器学习 · 计算机科学 2025-03-28 Thomson Yen , Andrew Wei Tung Siah , Haozhe Chen , Tianyi Peng , Daniel Guetta , Hongseok Namkoong

While many have shown how Large Language Models (LLMs) can be applied to a diverse set of tasks, the critical issues of data contamination and memorization are often glossed over. In this work, we address this concern for tabular data.…

机器学习 · 计算机科学 2024-12-05 Sebastian Bordt , Harsha Nori , Vanessa Rodrigues , Besmira Nushi , Rich Caruana

Data is the cornerstone of large language models (LLMs), but not all data is useful for model learning. Carefully selected data can better elicit the capabilities of LLMs with much less computational overhead. Most methods concentrate on…

机器学习 · 计算机科学 2024-07-12 Mingjia Yin , Chuhan Wu , Yufei Wang , Hao Wang , Wei Guo , Yasheng Wang , Yong Liu , Ruiming Tang , Defu Lian , Enhong Chen

While neural machine translation (NMT) is making good progress in the past two years, tens of millions of bilingual sentence pairs are needed for its training. However, human labeling is very costly. To tackle this training data bottleneck,…

计算与语言 · 计算机科学 2016-11-02 Yingce Xia , Di He , Tao Qin , Liwei Wang , Nenghai Yu , Tie-Yan Liu , Wei-Ying Ma

Autonomous robots operating in open environments need the ability to continuously handle tasks that are not covered by predefined local methods. However, existing approaches often rely on repeated large-language-model (LLM) interaction for…

机器人学 · 计算机科学 2026-04-27 Hong Su

Thousands of diverse benchmarks have been developed to measure the quality of large language models (LLMs). Yet prior work has demonstrated that LLM performance is often sufficiently explained by a small set of latent factors, or abilities.…

计算与语言 · 计算机科学 2026-04-03 Michael Krumdick , Adam Wiemerslage , Seth Ebner , Charles Lovering , Chris Tanner

Continual pre-training is widely used to adapt LLMs to target languages and domains, yet the mixture ratio of training data remains a sensitive hyperparameter that is expensive to tune: they must be fixed before training begins, and a…

计算与语言 · 计算机科学 2026-04-07 Haiyue Song , Masao Utiyama

Aligning large language models (LLMs) with human intentions has become a critical task for safely deploying models in real-world systems. While existing alignment approaches have seen empirical success, theoretically understanding how these…

机器学习 · 计算机科学 2024-08-08 Shawn Im , Yixuan Li

Large language models (LLMs) have enabled a range of applications in zero-shot and few-shot learning settings, including the generation of synthetic datasets for training and testing. However, to reliably use these synthetic datasets, it is…

计算与语言 · 计算机科学 2024-09-19 Gaurav Maheshwari , Dmitry Ivanov , Kevin El Haddad

Despite the impressive capabilities of Multimodal Large Language Models (MLLMs) in integrating text and image modalities, challenges remain in accurately interpreting detailed visual elements. Vision detection models excel at recognizing…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Qirui Jiao , Daoyuan Chen , Yilun Huang , Yaliang Li , Ying Shen